CCS Logistics

Protecting The Environment

Companies globally are challenged to balance competing demands, such as increasing shareholder value, with sustainable business practices. Cold logistics in particular blast freezing presents a difficulty as electricity is one of the biggest expense items and also the largest single contributor to CO2 Emissions. It comes as no surprise that energy efficiency is a major priority for the teams responsible for Safety, Health, Environment and Maintenance (SHEM) at CCS Logistics’ various cold stores. The teams are committed to researching and implementing sustainable operating practices.

A first step was replacing traditional 1000 Watt quartz lamps with 250 Watt mercury vapour and 150 Watt energy saving LED lamps.

An expansion project at City Deep over the past two to three years has meanwhile provided the perfect opportunity to implement new cold logistics technology. This has included upgrading the insulated panelling in the freezer store from the normal thickness of 200 millimetre (mm) to 250mm to improve the thermal conductivity and the facility’s ability to maintain temperatures. Solar panels have also been installed to energise the loading bay doors and operate the dock levellers (bridging the gap between truck and loading bay), while a plate heat exchanger was installed to use excess heat generated from the refrigeration plant where blast freezing takes place to heat up water for under-floor heating in the cold room in order to prevent ice heaving.

At the cold stores and blast freezing plants in Epping, Bayhead and City Deep, the normal starter gear for compressors were upgraded to variable speed drives in order to manage the load on the compressor motor and, thereby, control consumption. In addition, soft starters were installed to prolong the lifespan of the cold logistics equipment.

With regard to water measures, the three stores at Duncan Dock, Paarden Eiland and Walvis Bay have installed buffer tanks to catch drain/bleed water from the condensers to flush toilets and wash floors, while City Deep collects rain water to supplement the water supply to the condensers in the cooling process.

In Namibia, talks are underway with the Port authority, NamPort, to investigate the feasibility of using seawater in the condensing process.

Besides the energy and water savings, the scores obtained during external risk and environmental control system audits have improved steadily, averaging at 97% for risk and 90% for environment for the current financial year.

In terms of the group, Oceana recognises that practices introduced today specifically in cold logistics including blast freezing, have a long-term impact for future generations and that its operations impact the environment significantly.